5 March  – 8 April 2018, Annenberg Court, Admission free “Hide them in caves and cellars, but not one picture shall leave this island”. (Winston Churchill, 1940) In 2018, the National Gallery will recall a remarkable chapter in its history when, during the Second World War, its paintings were removed for safekeeping to a disused slate mine in Snowdonia. Twenty-four archival photographs documenting the dispersal of paintings to Manod near the town of Blaenau Ffestiniog in Wales, together with five photographs of the quarry as it appears today by Robin Friend, will be displayed in the Annenberg Court   Central to the exhibition is a 30 minute film, Winged Bull…